Generation of Spatial Solitons Arrays from Parametrically Amplified Quantum Noise

M. Marable, Sang Kyung Choi, Prem Kumar

We demonstrate quantum-noise correlations between the spatial frequencies of a parametrically amplified signal image and the generated conjugate (idler) image. Test images were amplified by an optical parametric amplifier that can be operated either as a low-pass or a band-pass amplifier for spatial frequencies. Direct difference detection of the signal and idler spatial frequencies at +- 16 mm{;{-1}} resulted in noise that fell below the shot-noise level by approx. 5 dB. Parametric-gain and phase-mismatch dependence of the observed quantum-noise reduction is in good agreement with the theory of a spatially-broadband optical parametric amplifier.

Ivan Deutsch, Izo I. Abram

Bernard Yurke, Michael Lee Roukes, Roman Movshovich +1 more

We have obtained parametric gain at 19 GHz from a distributed Josephson junction parametric amplifier whose active gain medium consists of a series array of 1000 Josephson junctions embedded in a coplanar waveguide. When cooled to 1.7 K the amplifier provides 16 dB gain in a mode where the internally generated double sideband noise referred to input is 0.5±0.1 K. This noise is consistent with Nyquist noise generated from the losses. An instantaneous bandwidth of 125 MHz has been observed with a peak gain of 12 dB. The 3 dB compression point with a peak gain of 14.6 dB is -90.5 dB and the dynamic range is 38 dB.

Franz X. Kärtner, H. A. Haus

Ivan Rabbiosi, Andrew J. Scroggie, Gian‐Luca Oppo

Spatial structures in extended nonlinear optical devices can display important quantum features. For example, quantum images in degenerate optical parametric oscillators (DOPO) show quadrature squeezing in the near field and Einstein-Podolsky-Rosen correlations in the far field. We present here a new kind of spatial structure induced by quantum fluctuations in the DOPO: arrays of cavity solitons.

Eduard Schmidt, L. Knöll, Dirk‐Gunnar Welsch